I am seeking a private mail box service in Mexico City

I am looking for a way to send and receive mail from and to the USA. Also packages from various mail order places like Amazon. I have had some things lost by Correo so I would like to find a private service. They had one like this in San Miguel. Does anyone know of one in Mexico City?

Thanks!

You might checkout Mailboxes USA in Monterrey.
http://mailboxesusa.net/id5.html

I have my mailbox in McAllen, TX and pick up routine stuff twice a year.  They are able to use Estafeta to forward urgent mail and packages to me for a reasonable fee.  I don't know for sure but it might be less than international shipping from Amazon.

At any rate, a call to the Monterrey office would get you the details on costs delivered to your door.